<template>
  <view class="cart-container" v-if="cart.length!==0">
    <!-- 收货地址组件-->
    <my-address></my-address>
    
    <!-- 商品的列表区域-->
    <view class="cart-title">
      <!-- 左侧图标-->
       <uni-icons type="shop" size="18"></uni-icons>
      <!-- 右侧文本-->
      <text class="cart-title-text">购物车</text>
    </view>
    
    
    <!-- 循环渲染购物车中的商品信息-->
   
      
   
    
    <uni-swipe-action>
       <block v-for="(goods,i) in cart" :key='i'>
      <uni-swipe-action-item :right-options="options" @click="swipeActionClickHandler(goods)">
            <my-goods :goods="goods" :show-radio="true" @radio-change="radioChangeHandler" :showNum="true" @num-change="numberChangeHandler"></my-goods>
      </uni-swipe-action-item>
       </block>
    </uni-swipe-action>
    
    <!-- 这是我的结算组件-->
    <my-settle></my-settle>
  </view>
  
  <!-- 这是空白购物车的区域-->
  <view class="empty-cart" v-else>
    <image src="/static/kkrye.jpg" class="empty-image"></image>
    <text class="tip-text">空空如也~</text>
  </view>
</template>

<script>
  import badgeMix from '@/mixins/tabbar-badge.js'
  import {mapState,mapMutations} from 'vuex'
  export default {
   mixins:[badgeMix],// 为tabbar某一项右上角添加文本
   computed:{
     ...mapState('m_cart',['cart']) 
   },
    data() {
      return {
         options: [{
              text: '删除', // 显示的文本内容
              style: {
                backgroundColor: '#C00000' // 按钮的背景颜色
              }
            }]
      };
    },
    methods: {
      ...mapMutations('m_cart',['updateGoodsState','updateGoodsCount','removeGoodsById']),
      // 商品的勾选状态发生了变化
      radioChangeHandler(e) {
      //  console.log(e) // 输出得到的数据 -> {goods_id: 395, goods_state: false}
      this.updateGoodsState(e)
      },
      //商品的数量发生了变化
      numberChangeHandler(e){
        this.updateGoodsCount(e)
      },
      swipeActionClickHandler(goods){
        this.removeGoodsById(goods.goods_id)
      }
      
    }//methods
 
  }
</script>

<style lang="scss">
  .cart-container{
    padding-bottom: 50px;
  }
.cart-title{
  display: flex;
  height: 40px;
  align-items: center;
  padding-left: 5px;
  border-bottom: 1px solid #4CD964;
  .cart-title-text{
    font-size: 14px;
    margin-left: 10px;
  }
  
}
.empty-cart{
  display: flex;
  flex-direction: column;//纵向排列
  align-items: center;
  padding-top: 100px;
  .empty-image{
    width: 90px;
    height: 90px;
    border-radius: 50px;
  }
  .tip-text{
    font-size: 13px;
    margin-top: 15px;
  }
}
</style>
